This interesting circuit converts BCD signals into a voltage that can be used in an analog application. The circuit was found in the July 1991 issue of Radio Electronics magazine.
This timer controls two relays, each with a different timing, activated separately. The circuit is from...
This circuit was found in a PE Hobbyst Handbook from 1992. The second oscillator is a VFO. The...
Found in a General Electric documentation from 1970, this circuit is intended to supply a power...